Lab Testing at East Texas Medical Center - Mt. Vernon - Questselect Members Only
QuestSelect / Members Only — access restricted in Mt Vernon, TX 75457.
Restricted Access. Verify eligibility before visiting.
This is a QuestSelect program location. Walk-in access is restricted to QuestSelect members through participating employers or health plans. If you are not enrolled in QuestSelect, this location is unlikely to accept your lab order. Consider Quest Diagnostics - Paris (36.5 miles away) instead. We display this address for completeness. Please verify access by calling 903-537-8045 before visiting.
Looking for a publicly accessible location?
Browse All TestsOr see Quest Diagnostics - Paris (36.5 miles away) for walk-in testing.
Address
500 South State Highway 37Mt Vernon, TX 75457
Franklin County
Hours
| Monday | 7:30 AM – 4:00 PM |
| Tuesday | 7:30 AM – 4:00 PM |
| Wednesday | 7:30 AM – 4:00 PM |
| Thursday | 7:30 AM – 4:00 PM |
| Friday | 7:30 AM – 4:00 PM |
| Saturday | Closed |
| Sunday | Closed |
Nearby alternatives
- Quest Diagnostics - Paris3150 Clarksville St Suite 500, Paris, TX 7546036.5 mi
- LabCorp Paris1055 Clarksville St Suite 185, Paris, TX 7546037.9 mi
- Salas Minor Emergency Center1655 Ne Loop 286, Paris, TX 7546039 mi
- Quest Diagnostics - Greenville4101 Wesley St Suite G, Greenville, TX 7540150.7 mi
- Drug Testing Of Texas2806 Mitchell St, Greenville, TX 7540250.9 mi
About this location
QuestSelect / Members Only — access restricted. Quest Diagnostics operates one of the largest networks of clinical laboratories in the United States, offering a wide range of diagnostic tests for patients, physicians, and employers.
Listing last updated 2026-04-25.